It’s one thing to complain about food but this lunatic is out of his mind! A video below shows there’s something really wrong with this guy. He told the worker he was going to kill her and you have to believe him after seeing this!

Dallas police detectives want to identify a fast food customer they say went on a threatening rampage because he was dissatisfied with a milkshake order.

Surveillance video from the Burger King at 11800 block of N. Central Expressway from June 13 shows the man at the counter. The video has no audio.

But the recording shows him throwing a drink at someone outside the scope of the camera.

The man then grabs a highchair from the seating section and flings it across the counter.